Nanny share pay for babies

What is the going rate of a nanny share for a 3 - 6 month old? I plan on having my first child in July and will want to take on another baby once she is 3 - 6 months old (of course depending on what's going on in the world at that time). I have over 15 years of early childcare experience (yet most of it is with children 2.5 -5 y.o.), I've taken the RIE training and I'm also Montessori trained for 2.5 - 5 y.o.. What would seem reasonable to ask for? Thanks!